These black lines on fingernails may look like bruising ... They develop when blood leaks into the space between the nail and ...

A black line on your nail (medically known as melanonychia) causes a streak of dark pigmentation that runs along the nail bed. It can be a normal color variation, especially in people with darker ...

Longitudinal ridging, which is clinically known as onychorrhexis, occurs on the nails and may appear as vertical striations or lines that originate from the base of the fingernail and continue to ...

In September of last year, Ohio mum Michelle Tagliamonte looked down at her hands and noticed something odd about one of her fingernails. Little did she know, however, that just weeks after spotting ...

But the lines were still there. Kennedy News & Media Tagliamonte went to a dermatologist, who told her the “discoloration at the base of my thumb nail ... this black line in my nail was coming ...